Fixing Windows Security 502 Bad Gateway Errors
If you see a 502 Bad Gateway error in Windows Security (or the Windows Defender portal), it usual...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Activation After Hardware Change
If you recently upgraded your PC's motherboard, CPU, or hard drive and now see “Windows is not ac...
Fix SSH Connection Refused on Windows Terminal
If you see ssh: connect to host [hostname] port 22: Connection refused in Windows Te...
Fix 'Microsoft Store Command Not Found' Error After Reinstall
After reinstalling the Microsoft Store, you may see a "command not found" error when trying to ru...
How to Fix Windows Activation Failed to Start Permission Denied
You try to activate Windows and get an error: "Activation failed to start" with "Permission denie...
Fix Windows Search Settings Not Saving
You change a Windows Search setting—like indexing options or excluded folders—but it reverts afte...
Topic paths
Quick titles
Windows Terminal Permission Denied on Launch FixWindows Terminal Access Error ChecklistWindows Update Stuck on Checking for Updates FixHow to Fix Windows Update Error 0x80240034 (Rate Limit)How to Fix Windows Defender Error 504: Step-by-Step GuideHow to Fix Windows Activation Service Not RespondingNginx 404 Not Found Troubleshooting ChecklistWindows Defender Proxy Error Troubleshooting Guide